Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) 2003 Linux Networx, SuSE Linux AG |
| 3 | * (C) 2004 Tyan Computer |
| 4 | */ |
| 5 | #include <console/console.h> |
| 6 | #include <device/device.h> |
| 7 | #include <device/pci.h> |
| 8 | #include <device/pci_ids.h> |
| 9 | #include <device/pci_ops.h> |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 10 | #include <pc80/mc146818rtc.h> |
Steven J. Magnani | ef79223 | 2005-09-21 13:53:44 +0000 | [diff] [blame] | 11 | #include <pc80/isa-dma.h> |
| 12 | #include <arch/io.h> |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 13 | #include "i82801dx.h" |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 14 | |
Steven J. Magnani | ef79223 | 2005-09-21 13:53:44 +0000 | [diff] [blame] | 15 | |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 16 | |
| 17 | #define NMI_OFF 0 |
| 18 | |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 19 | void i82801dx_enable_ioapic( struct device *dev) |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 20 | { |
| 21 | uint32_t dword; |
| 22 | volatile uint32_t *ioapic_sba = (volatile uint32_t *)0xfec00000; |
| 23 | volatile uint32_t *ioapic_sbd = (volatile uint32_t *)0xfec00010; |
| 24 | |
| 25 | dword = pci_read_config32(dev, GEN_CNTL); |
| 26 | dword |= (3 << 7); /* enable ioapic */ |
| 27 | dword |= (1 <<13); /* coprocessor error enable */ |
| 28 | dword |= (1 << 1); /* delay transaction enable */ |
| 29 | dword |= (1 << 2); /* DMA collection buf enable */ |
| 30 | pci_write_config32(dev, GEN_CNTL, dword); |
| 31 | printk_debug("ioapic southbridge enabled %x\n",dword); |
| 32 | *ioapic_sba=0; |
| 33 | *ioapic_sbd=(2<<24); |
| 34 | //lyh *ioapic_sba=3; |
| 35 | //lyh *ioapic_sbd=1; |
| 36 | *ioapic_sba=0; |
| 37 | dword=*ioapic_sbd; |
| 38 | printk_debug("Southbridge apic id = %x\n",dword); |
| 39 | if(dword!=(2<<24)) |
Carl-Daniel Hailfinger | 87e7050 | 2009-06-05 11:41:51 +0000 | [diff] [blame] | 40 | die(""); |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 41 | //lyh *ioapic_sba=3; |
| 42 | //lyh dword=*ioapic_sbd; |
| 43 | //lyh printk_debug("Southbridge apic DT = %x\n",dword); |
| 44 | //lyh if(dword!=1) |
Carl-Daniel Hailfinger | 87e7050 | 2009-06-05 11:41:51 +0000 | [diff] [blame] | 45 | //lyh die(""); |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 46 | |
| 47 | |
| 48 | } |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 49 | void i82801dx_enable_serial_irqs( struct device *dev) |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 50 | { |
| 51 | pci_write_config8(dev, SERIRQ_CNTL, (1 << 7)|(1 << 6)|((21 - 17) << 2)|(0<< 0)); |
| 52 | } |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 53 | void i82801dx_lpc_route_dma( struct device *dev, uint8_t mask) |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 54 | { |
| 55 | uint16_t word; |
| 56 | int i; |
Steven J. Magnani | ef79223 | 2005-09-21 13:53:44 +0000 | [diff] [blame] | 57 | word = pci_read_config16(dev, PCI_DMA_CFG); |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 58 | word &= ((1 << 10) - (1 << 8)); |
| 59 | for(i = 0; i < 8; i++) { |
| 60 | if (i == 4) |
| 61 | continue; |
| 62 | word |= ((mask & (1 << i))? 3:1) << (i*2); |
| 63 | } |
| 64 | pci_write_config16(dev, PCI_DMA_CFG, word); |
| 65 | } |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 66 | void i82801dx_rtc_init(struct device *dev) |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 67 | { |
| 68 | uint8_t byte; |
| 69 | uint32_t dword; |
| 70 | int rtc_failed; |
| 71 | byte = pci_read_config8(dev, GEN_PMCON_3); |
| 72 | rtc_failed = byte & RTC_FAILED; |
| 73 | if (rtc_failed) { |
| 74 | byte &= ~(1 << 1); /* preserve the power fail state */ |
| 75 | pci_write_config8(dev, GEN_PMCON_3, byte); |
| 76 | } |
| 77 | dword = pci_read_config32(dev, GEN_STS); |
| 78 | rtc_failed |= dword & (1 << 2); |
| 79 | rtc_init(rtc_failed); |
| 80 | } |
| 81 | |
| 82 | |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 83 | void i82801dx_1f0_misc(struct device *dev) |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 84 | { |
| 85 | pci_write_config16(dev, PCICMD, 0x014f); |
| 86 | pci_write_config32(dev, PMBASE, 0x00001001); |
| 87 | pci_write_config8(dev, ACPI_CNTL, 0x10); |
| 88 | pci_write_config32(dev, GPIO_BASE, 0x00001181); |
| 89 | pci_write_config8(dev, GPIO_CNTL, 0x10); |
| 90 | pci_write_config32(dev, PIRQA_ROUT, 0x0A05030B); |
| 91 | pci_write_config8(dev, PIRQE_ROUT, 0x07); |
| 92 | pci_write_config8(dev, RTC_CONF, 0x04); |
| 93 | pci_write_config8(dev, COM_DEC, 0x10); //lyh E0-> |
| 94 | pci_write_config16(dev, LPC_EN, 0x000F); //LYH 000D-> |
| 95 | } |
| 96 | |
| 97 | static void enable_hpet(struct device *dev) |
| 98 | { |
| 99 | const unsigned long hpet_address = 0xfed0000; |
| 100 | |
| 101 | uint32_t dword; |
| 102 | uint32_t code = (0 & 0x3); |
| 103 | |
| 104 | dword = pci_read_config32(dev, GEN_CNTL); |
| 105 | dword |= (1 << 17); /* enable hpet */ |
| 106 | /*Bits [16:15]Memory Address Range |
| 107 | 00 FED0_0000h - FED0_03FFh |
| 108 | 01 FED0_1000h - FED0_13FFh |
| 109 | 10 FED0_2000h - FED0_23FFh |
| 110 | 11 FED0_3000h - FED0_33FFh*/ |
| 111 | |
| 112 | dword &= ~(3 << 15); /* clear it */ |
| 113 | dword |= (code<<15); |
| 114 | |
| 115 | printk_debug("enabling HPET @0x%x\n", hpet_address | (code <<12) ); |
| 116 | } |
| 117 | |
| 118 | static void lpc_init(struct device *dev) |
| 119 | { |
| 120 | uint8_t byte; |
| 121 | int pwr_on=-1; |
Luc Verhaegen | a9c5ea0 | 2009-06-03 14:19:33 +0000 | [diff] [blame] | 122 | int nmi_option; |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 123 | |
| 124 | /* IO APIC initialization */ |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 125 | i82801dx_enable_ioapic(dev); |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 126 | |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 127 | i82801dx_enable_serial_irqs(dev); |
Steven J. Magnani | ef79223 | 2005-09-21 13:53:44 +0000 | [diff] [blame] | 128 | |
| 129 | #ifdef SUSPICIOUS_LOOKING_CODE |
| 130 | // The ICH-4 datasheet does not mention this configuration register. |
| 131 | // This code may have been inherited (incorrectly) from code for the AMD 766 southbridge, |
| 132 | // which *does* support this functionality. |
| 133 | |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 134 | /* posted memory write enable */ |
| 135 | byte = pci_read_config8(dev, 0x46); |
| 136 | pci_write_config8(dev, 0x46, byte | (1<<0)); |
Steven J. Magnani | ef79223 | 2005-09-21 13:53:44 +0000 | [diff] [blame] | 137 | #endif |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 138 | |
| 139 | /* power after power fail */ |
| 140 | /* FIXME this doesn't work! */ |
| 141 | /* Which state do we want to goto after g3 (power restored)? |
| 142 | * 0 == S0 Full On |
| 143 | * 1 == S5 Soft Off |
| 144 | */ |
| 145 | pci_write_config8(dev, GEN_PMCON_3, pwr_on?0:1); |
| 146 | printk_info("set power %s after power fail\n", pwr_on?"on":"off"); |
| 147 | #if 0 |
| 148 | /* Enable Error reporting */ |
| 149 | /* Set up sync flood detected */ |
| 150 | byte = pci_read_config8(dev, 0x47); |
| 151 | byte |= (1 << 1); |
| 152 | pci_write_config8(dev, 0x47, byte); |
| 153 | #endif |
| 154 | |
| 155 | /* Set up NMI on errors */ |
Steven J. Magnani | ef79223 | 2005-09-21 13:53:44 +0000 | [diff] [blame] | 156 | byte = inb(0x61); |
| 157 | byte &= ~(1 << 3); /* IOCHK# NMI Enable */ |
| 158 | byte &= ~(1 << 2); /* PCI SERR# Enable */ |
| 159 | outb(byte, 0x61); |
| 160 | byte = inb(0x70); |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 161 | nmi_option = NMI_OFF; |
Luc Verhaegen | a9c5ea0 | 2009-06-03 14:19:33 +0000 | [diff] [blame] | 162 | get_option(&nmi_option, "nmi"); |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 163 | if (nmi_option) { |
Steven J. Magnani | ef79223 | 2005-09-21 13:53:44 +0000 | [diff] [blame] | 164 | byte &= ~(1 << 7); /* set NMI */ |
| 165 | outb(byte, 0x70); |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | /* Initialize the real time clock */ |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 169 | i82801dx_rtc_init(dev); |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 170 | |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 171 | i82801dx_lpc_route_dma(dev, 0xff); |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 172 | |
| 173 | /* Initialize isa dma */ |
| 174 | isa_dma_init(); |
| 175 | |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 176 | i82801dx_1f0_misc(dev); |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 177 | /* Initialize the High Precision Event Timers */ |
| 178 | enable_hpet(dev); |
| 179 | } |
| 180 | |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 181 | static void i82801dx_lpc_read_resources(device_t dev) |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 182 | { |
Eric Biederman | 4f9265f | 2004-10-22 02:33:51 +0000 | [diff] [blame] | 183 | struct resource *res; |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 184 | |
Myles Watson | 29cc9ed | 2009-07-02 18:56:24 +0000 | [diff] [blame] | 185 | /* Get the normal PCI resources of this device. */ |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 186 | pci_dev_read_resources(dev); |
| 187 | |
Myles Watson | 29cc9ed | 2009-07-02 18:56:24 +0000 | [diff] [blame] | 188 | /* Add an extra subtractive resource for both memory and I/O. */ |
Eric Biederman | 4f9265f | 2004-10-22 02:33:51 +0000 | [diff] [blame] | 189 | res = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0)); |
Myles Watson | 29cc9ed | 2009-07-02 18:56:24 +0000 | [diff] [blame] | 190 | res->base = 0; |
| 191 | res->size = 0x1000; |
| 192 | res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | |
| 193 | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
Eric Biederman | 4f9265f | 2004-10-22 02:33:51 +0000 | [diff] [blame] | 194 | |
| 195 | res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0)); |
Myles Watson | 29cc9ed | 2009-07-02 18:56:24 +0000 | [diff] [blame] | 196 | res->base = 0xff800000; |
| 197 | res->size = 0x00800000; /* 8 MB for flash */ |
| 198 | res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | |
| 199 | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
| 200 | |
| 201 | res = new_resource(dev, 3); /* IOAPIC */ |
| 202 | res->base = 0xfec00000; |
| 203 | res->size = 0x00001000; |
| 204 | res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
Eric Biederman | 4f9265f | 2004-10-22 02:33:51 +0000 | [diff] [blame] | 205 | } |
| 206 | |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 207 | static void i82801dx_lpc_enable_resources(device_t dev) |
Eric Biederman | 4f9265f | 2004-10-22 02:33:51 +0000 | [diff] [blame] | 208 | { |
| 209 | pci_dev_enable_resources(dev); |
| 210 | enable_childrens_resources(dev); |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 211 | } |
| 212 | |
| 213 | static struct device_operations lpc_ops = { |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 214 | .read_resources = i82801dx_lpc_read_resources, |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 215 | .set_resources = pci_dev_set_resources, |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 216 | .enable_resources = i82801dx_lpc_enable_resources, |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 217 | .init = lpc_init, |
| 218 | .scan_bus = scan_static_bus, |
Stefan Reinauer | 138be83 | 2010-02-27 01:50:21 +0000 | [diff] [blame^] | 219 | .enable = i82801dx_enable, |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 220 | }; |
| 221 | |
Stefan Reinauer | f1cf1f7 | 2007-10-24 09:08:58 +0000 | [diff] [blame] | 222 | static const struct pci_driver lpc_driver __pci_driver = { |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 223 | .ops = &lpc_ops, |
| 224 | .vendor = PCI_VENDOR_ID_INTEL, |
Uwe Hermann | a29ec06 | 2007-11-04 03:21:37 +0000 | [diff] [blame] | 225 | .device = PCI_DEVICE_ID_INTEL_82801DBM_LPC, |
Ronald G. Minnich | 182615d | 2004-08-24 16:20:46 +0000 | [diff] [blame] | 226 | }; |